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Negative Effects Of Global Warming PROS AND CONS OF GLOBAL WARMING
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The Global Warming

Global warming is the increase in thescientists also disagree with parts of
average temperature of the Earth'sthem.
near-surface air and oceans in recentAn increase in global temperatures can
decades and its projected continuation.in turn cause other changes, including
Global average air temperature near thesea level rise, and changes in the
Earth's surface rose 0.74 ± 0.18 °Camount and pattern of precipitation
during the past century. Theresulting in floods and drought. There
Intergovernmental Panel on Climatemay also be changes in the frequency and
Change (IPCC) concludes, "most of theintensity of extreme weather events,
observed increase in globally averagedthough it is difficult to connect
temperatures since the mid-20th centuryspecific events to global warming. Other
is very likely due to the observedeffects may include changes in
increase in anthropogenic greenhouse gasagricultural yields, glacier retreat,
concentrations," which leads to warmingreduced summer streamflows, species
of the surface and lower atmosphere byextinctions and increases in the ranges
increasing the greenhouse effect.of disease vectors.
Natural phenomena such as solarThe term "global warming" is a specific
variation combined with volcanoes haveexample of the broader term climate
probably had a small warming effect fromchange, which can also refer to global
pre-industrial times to 1950, but acooling. In common usage the term refers
small cooling effect since 1950.to recent warming and implies a human
These basic conclusions have beeninfluence. The United Nations Framework
endorsed by at least 30 scientificConvention on Climate Change (UNFCCC)
societies and academies of science,uses the term "climate change" for
including all of the national academieshuman-caused change, and "climate
of science of the major industrializedvariability" for other changes. The term
countries. The American Association of"anthropogenic climate change" is
Petroleum Geologists is the onlysometimes used when focusing on
scientific society that rejects thesehuman-induced changes.
conclusions, and a few individual



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